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Blog Living, self-repairing, laser
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Engagement
  • Author Author: Eavesdropper
  • Date Created: 13 Jun 2011 8:39 PM Date Created
  • Views 221 views
  • Likes 1 like
  • Comments 2 comments
  • research
  • dit
  • eavesdropper:dit
  • medtronic
  • on_campus
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  • laser
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Living, self-repairing, laser

Eavesdropper
Eavesdropper
13 Jun 2011
image
Jellyfish glow iridescently as they float seemingly weightless in the ocean. When exposed to the blue light, Green Fluorescent Protein (GFP) in the Aequorea victoria Jellyfish will emit a green hue at around 480nm. Out of curiosity, Malte Gather and Seok-Hyun Yun, from Harvard University, wanted to see if they could make a laser out of this effect. The pair injected a human kidney cell with a specialized loop of GFP DNA. Placing the cell between two mirrors, standard laser configuration, they exposed it to blue light which started the effect. The light then bounced and amplified between the two mirrors, through the cell acting as a laser gain media, until the energy penetrated through one of the semi-transparent mirrors. The light emitted was a laser that could operate for several minutes without destroying the living kidney cell. Yun stated after demonstration, "Previously the laser was considered an engineering material, and now we are showing the concept of the laser can be integrated into biological systems."
 
The next step for the team is to create an internal body imaging technique based on this research. Yun continues, "We would like to have a laser inside the body of the animal, to generate laser light directly within the animal's tissue."
 
Can the "Blaze" laser image be permanently implanted in the bicycle rider then?
 
Eavesdropper
 
Picture via Nature Photonics and the Wellman Center of Photomedicine
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  • Eavesdropper
    Eavesdropper over 11 years ago in reply to DAB

    Dab,

     

    They were able to maintain the laser for 16 minutes in the study. They also said since the laser is made of living materials, if part of it gets damaged or lost, it will repair and grow back. Or, is this a new type of kidney problem waiting to happen?

     

    E

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  • DAB
    DAB over 11 years ago

    I wonder what kind of efficiencies they can get with this technique.  Given the cell would likely absorb some of the energy it would probably overheat on extended use.  That said, if you used enough cells in a controlled sequence, you might be able to sustain an interesting level of light using a low duty cycle.

     

    Very interesting.

     

    DAB

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